The nucleus of one boron atom has five protons and four neutrons. Determine the total number of electrons in the boron atom.

Which of the following is true about lonization? The ionic substances donate some of their atoms to the solvent. The covalent substance breaks apart into ions. The ionic substance breaks apart into ions.

Distinguish between temperature and thermal energy

What does S + O2 yield

Calculate the number of moles of potassium, K, in 1.21 x 1024 atoms of potassium

Rank the following solutions from the highest [H3O+] (1) to the lowest [H3O+] (5). [H3O+] = 3.16 * 10-4 M [OH-] = 4.35 * 10-2 M pH = 1.05 pOH = 7.0 pOH = 4.0

Suppose the average concentration of copper in water is measured to be 2.5 x 10" M. a. Express this concentration in mg/L. b. Express this concentration in ug/L. c.

If I add water to oil what will happen

Commercial fertilizers, which are made by humans, are used to enrich soil for healthier crops. However, erosion may carry the fertilizer chemicals to the oceans. The presence of these chemicals may cause certain kinds of algae to reproduce rapidly.

A cube of iron has a temperature of 35°C. It is placed on top of a hot surface with a temperature of 175°C. What will happen to the iron? A) Its temperature will decrease. B) Heat will flow from the hot surface into the iron.

Density differences cause the